Moving a still excellent laptop from WinXP to Win10. Big drive with multiple partitions already in place and running.

Steps I plan to take:

1) Image C Partition to safe location. Verify restorable = Completed.

2) Clone C Partition to D Partition = next step

3) Ensure MBR is altered somehow to permit Dual Boot choice ***

4) Verify that both C and D boots function

5) Install Win10 on C

So for Step 3 I am unsure if the free version of Backupper will give me a utility to update/upgrade the boot loader to permit dual booting. If so, please either link existing documentation on how to do so or indicate if it's a simple menu choice of Backupper once installed.

I would Start XP on C: and download EasyBcd from Neosmart (free) and let it add an entry (the D: drive) to the bootmenu. Now you have a double XP boot and can verify (step 4). Then install Windows 10 (step 5) and it will keep the bootmenu.